keytool - import CA reply certificate error

[Ariffin Ahmad]

i used keytool to create a keystore and then create the certificate signing request from it.
then, i send the csr for the trial certificate from verisign.
then verisign reply with trial certificate to my email.
the problem rise when i try to import the certificate.
i got error message:
'keytool error: java.lang.Exception: Failed to establish chain from reply'.
my keytool command:
'c:\j2sdk1.4.0\bin\keytool -import -alias tomcat -keystore cert -trustcacerts -file certverisign.cer'